Bicycle-brake.



Patented Mar. 13, I900.

W; S. BUSLER.

BIGYCLE- BRAKE.

(Application filed Mar. 11, 1899.)

(No Model.)

Nrrsn STATES PATENT OFFICE.

\VILLIAM S. BUSLER, OF PHILADELPHIA, PENNSYLVANIA.

BICYCLE-BRAKE.

SPECIFICATION forming part of Letters Patent No. 645,246, dated March13, 1900. Application filed March 11, 1899. Serial No. 708,728. (Nomodel.)

To all whom, it may concern.-

Be it known that I, \VILLIAM S. BUSLER, a citizen of the United States,residing at Philadelphia, in the county of Philadelphia and State ofPennsylvania, haveinvented certain new and useful Improvements inBicycle- Brakes, of which the following is a specification, referencebeinghad therein to the accompanying drawings.

My invention relates to brakes for bicycles and other vehicles; and itsprimaryobject is to provide an effective brake which may beautomatically applied by backward pressure upon the hub of the wheel, asby back-pedaling in the case of a bicycle. I

A further object of the invention is to so construct the brake withrelation to the wheel hub and axle as to entirely inclose and concealthe operative mechanism.

The novel features of the invention will be fully described hereinafterand defined in the appended claims, in connection with the accompanyingdrawings, in which-- Figure 1 is a longitudinal section of a vehicle huband axle with my improved brake mechanism applied thereto. Fig. 2 is atrans verse section of the same on the line 2 2 of Fig. 1. Fig. 3 is aview in perspective of the inner section of the hub removed, and Fig. 4is a similar view of the brake-band detached.

The hub comprises an outer sleeve or cylindrical section 1 and an innersleeve 2, the latter fitting snugly in the former, but not so tightly asto prevent the outer sleeve 1 from partially revolving upon the sleeve2. The sleeve 2 carries a sprocketwheel 3, and the spoke-rims 4: arecarried by the outer sleeve.

The inner sleeve 2 is formed with an elongated slot 5, through which isinserted the brake-band, consisting of two plates or leaves 6 and 7,preferably of sheet metal, hinged together at one end, as shown at S,and each,

formed with a semicircular bend or channel 9 to embrace the axle 10. Theplate or leaf 6 is formed with a plurality of lugs 11, which are bentoutwardly to enter corresponding slots 12, formed in the inner sleeve 2,and the opposite plate or leaf 7 is provided with an outwardly turnedflange 13, secured by rivets 14 or equivalent fastening means to theouter sleeve 1.

As is obvious from the illustration, the

plates or leaves (land 7 constituting the brakeband are out of contactwith the axle 10 as long as the hub revolves in a forward direction; butas soon as the forward motion of the outer sleeve 1 is arrested byback-pedaling said sleeve moves a part of a revolution upon the innersleeve 2, causing the two leaves or sections of the brake-bandtoapproach each other and bind tightly by frictional contact upon theaxle, thus braking the wheel, the extent or force of the binding contactbeing dependent upon the amount of backward pressure applied to thepedals. Any preferred or suitable construction of ball-races may beprovided for the inner sleeve 2 of the hub; but this feature of thedevice, as well as other minor details, may be varied indefinitely andconstitutes no part of the present invention. As soon as the backpressure upon the pedals is relieved the inner sleeve moves a sufficientdistance within the outer sleeve, (a fraction of a revolution,) thusagain separating the sections or leaves of the brake-bands.

1. In a brake for bicycles and other vehicles, the'combination with theaxle, of an inner and an outer sleeve, said inner sleeve being formedwith an elongated slot; a brake comprising plates or leaves. hingedtogether at their inner edges and having their opposite ends projectingthrough said slot, one of said plates or leaves being secured to saidinner sleeve and the other plate or leaf being secured to the outersleeve, and a driving member mounted on the inner sleeve.

2. In a brake for bicyles and other vehicles, the combination with anaxle, of a hub comprising an inner and an outer sleeve, said innersleeve being formed with an elongated slot, a two-part brake-bandcomprising plates or leaves extending through said slot and having oneplate or leaf secured to the inner sleeve and the other plate or leafsecured to the outer sleeve, and a driving member mount ed on the innersleeve.

3. In a brake for bicycles or other vehicles, the combination with anaxle, of a hub comprising an inner and an outer sleeve, the

inner sleeve being formed with an elongated slot, at brake-bandconcealed Within the hub, and comprising two hinged plates or sectionsprovided with projecting lugs and flanges, and secured respectively oneto each of the Witnesses:

/VALTER XV. OALMORE, ALLEN C. MIDDLETON.

